<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
    <script>
        let obj=new Object();
        obj.name="小明"
        console.log(obj.name);
        let obj1 = new Object();
        console.log(obj1.name);//有没有name属性?
    </script>
</body>
</html>